Attachable rail



FIG. 1 is a perspective view of an attachable rail;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Broken lines are used to illustrate unclaimed portions of the attachable rail; broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for an attachable rail, as shown and described. 